EP4370501A1 - Method of preparing of arthropodicidal oxadiazine intermediate - Google Patents

Method of preparing of arthropodicidal oxadiazine intermediate

Info

Publication number
EP4370501A1
EP4370501A1 EP22751859.4A EP22751859A EP4370501A1 EP 4370501 A1 EP4370501 A1 EP 4370501A1 EP 22751859 A EP22751859 A EP 22751859A EP 4370501 A1 EP4370501 A1 EP 4370501A1
Authority
EP
European Patent Office
Prior art keywords
formula
compound
preparation
process according
phosgene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22751859.4A
Other languages
German (de)
English (en)
French (fr)
Inventor
Eran FOGLER
Liza PEN
Natalia STRIZHIVER
Chen VAZANA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adama Makhteshim Ltd
Original Assignee
Adama Makhteshim Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adama Makhteshim Ltd filed Critical Adama Makhteshim Ltd
Publication of EP4370501A1 publication Critical patent/EP4370501A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D273/00—Heterocyclic compounds containing rings having nitrogen and oxygen atoms as the only ring hetero atoms, not provided for by groups C07D261/00 - C07D271/00
    • C07D273/02—Heterocyclic compounds containing rings having nitrogen and oxygen atoms as the only ring hetero atoms, not provided for by groups C07D261/00 - C07D271/00 having two nitrogen atoms and only one oxygen atom
    • C07D273/04—Six-membered rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C269/00—Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C269/06—Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups by reactions not involving the formation of carbamate groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C271/62—Compounds containing any of the groups, X being a hetero atom, Y being any atom, e.g. N-acylcarbamates
    • C07C271/66—Y being a hetero atom

Definitions

  • the present invention concerns a process for preparing of methyl chloroformyl[4- (trifluoromethoxy)phenyl]carbamate as key intermediate for preparation of indoxacarb in the absence of organic base and metal hydride.
  • Arthropodicidal oxadiazines and the corresponding synthetic methods for the preparation of biologically active oxadiazines and their intermediates are previously disclosed in patent applications WO 9211249, WO 95/29171 and WO 9319045.
  • the present invention provides a process for preparation of methyl chloroformyl[4- (trifluoromethoxy)phenyl]carbamate of formula I comprising reaction of compound of formula (IV) with phosgene or phosgene derivative in the presence of phase transfer catalyst, alkaline base and hydrocarbon organic solvent and in the absence of organic base and metal hydride.
  • the present invention provides a telescopic process for preparation of methyl chloroformyl[4-(trifluoromethoxy)phenyl]carbamate of formula I comprising: a) preparation of compound of formula (II) by reaction of compound of formula (III) with phosgene or phosgene derivative in the presence of dimethylcarbonate and hydrocarbon organic solvent b) preparation of compound of formula (IV) by reaction of compound of formula (II) with methanol and distillation out of dimethylcarbonate c) reaction of compound of formula (IV) with phosgene or phosgene derivative in the presence of phase transfer catalyst, alkaline base and hydrocarbon organic solvent.
  • the present invention further provides a process of preparation of indoxacarb of formula V using methyl chloroformyl[4-(trifluoromethoxy)phenyl]carbamate of formula (I) prepared by process , comprising reaction of compound of formula (IV) with phosgene in the presence of phase transfer catalyst, alkaline base and hydrocarbon organic solvent and in the absence of organic base and metal hydride.
  • Certain compounds of this invention can exist as one or more stereoisomers.
  • the various stereoisomers include enantiomers, diastereomers, and geometric isomers.
  • one stereoisomer may be more active and/or may exhibit beneficial effects when enriched relative to the other stereoisomer(s) or when separated from the other stereoisomer(s). Additionally, the skilled artisan knows how to separate, enrich, and/or to selectively prepare said stereoisomers.
  • the compounds of the invention may be present as a mixture of stereoisomers, individual stereoisomers, or as an optically active form.
  • telescopic process refers to carrying out several reactions without isolating the intermediate products.
  • telescopic process suggests the execution of multiple transformations (including reaction quenches and other workup operations) without the direct isolation of intermediates.
  • Telescoped solutions of intermediates can be extracted, filtered (as long as the desired product remains in the filtrate), and solvent exchanged, but the intermediate is ultimately held in solution and carried forward to the subsequent transformation.
  • the present invention provides technology useful for the successful and convenient preparation of methyl chloroformyl[4-(trifluoromethoxy)phenyl]carbamate of formula (I) as intermediate for synthesis of indoxacarb of formula V in the absence of organic base and metal hydride.
  • the present invention concerns the process for preparation of methyl chloroformyl[4-(trifluoromethoxy)phenyl]carbamate of formula I comprising reaction of compound of formula (IV) with phosgene or phosgene derivative in the presence of phase transfer catalyst, alkaline base and hydrocarbon organic solvent and in the absence of organic base and metal hydride.
  • phosgene derivative is selected from diphosgene, triphosgene or the mixtures thereof.
  • the process carried out "in the absence of organic base” refers to the process including not more than 0.01 mole of organic base on each 1 mole of carbamic acid methyl ester of formula (IV).
  • the process carried out "in the absence of organic base” refers to the process including not more than 0.05 mole of organic base on each 1 mole of carbamic acid methyl ester of formula (IV). In some embodiment, the process carried out “in the absence of organic base” refers to the process including not more than 0.1 mole of organic base on each 1 mole of carbamic acid methyl ester of formula (IV).
  • the process carried out "in the absence of metal hydride” refers to the process including not more than 0.01 mole of metal hydride on each 1 mole of carbamic acid methyl ester of formula (IV).
  • the process carried out "in the absence of metal hydride” refers to the process including not more than 0.05 mole of metal hydride on each 1 mole of carbamic acid methyl ester of formula (IV). In some embodiment, the process carried out “in the absence of metal hydride” refers to the process including not more than 0.1 mole of metal hydride on each 1 mole of carbamic acid methyl ester of formula (IV).
  • the process is suitably carried out in hydrocarbon organic solvent such as hexane, petroleum ether, toluene, chlorobenzene, xylene, mesitylene and the mixtures thereof.
  • hydrocarbon organic solvent such as hexane, petroleum ether, toluene, chlorobenzene, xylene, mesitylene and the mixtures thereof.
  • the process pertains the alkaline base such as sodium hydroxide, potassium hydroxide, potassium carbonate, sodium carbonate and the mixtures thereof.
  • the process concerns the presence of sodium hydroxide, potassium hydroxide or the mixtures thereof.
  • the amount of alkaline base used in the process is 1.0 to 10.0 mole as related to 1 mole of carbamic acid methyl ester of formula (IV).
  • the amount of sodium hydroxide base used in the process is 6.0 mole as related to 1 mole of carbamic acid methyl ester of formula (IV).
  • the process pertains the presence of phase transfer catalyst, such as tetra-butyl ammonium iodide, tetra-ethyl ammonium bromide, tetra-methyl ammonium bromide, tetra-propyl ammonium bromide, tetra-butyl ammonium bromide, crown ethers, PEG and the mixtures thereof.
  • the amount of phase transfer catalyst used in the process is 0.001 to 0.1 mole as related to 1 mole of carbamic acid methyl ester of formula (IV).
  • the amount of phase transfer catalyst used in the process is 0.05mole as related to 1 mole of carbamic acid methyl ester of formula (IV).
  • phase transfer catalyst is tetra-butyl ammonium bromide (TBAB).
  • the compound of formula (II) is not isolated from the reaction mixture.
  • the present invention concerns the telescopic process for preparation of methyl chloroformyl[4-(trifluoromethoxy)phenyl]carbamate of formula I comprising: a) preparation of compound of formula (II) by reaction of compound of formula (III) with phosgene or phosgene derivative in the presence of dimethylcarbonate and hydrocarbon organic solvent b) preparation of compound of formula (IV) by reaction of compound of formula (II) with methanol and distillation out of dimethylcarbonate c) reaction of compound of formula (IV) with phosgene or phosgene derivative in the presence of phase transfer catalyst, alkaline base and hydrocarbon organic solvent.
  • the hydrocarbon organic solvent is selected from the group consisting of toluene, chlorobenzene, xylene, mesitylene and the mixtures thereof.
  • the preparation of compound of formula (II) is carried out at a temperature of from 10°C to 70 °C. In a class of this embodiment the preparation of compound of formula (II) is carried out at a temperature of 25 to 70°C.
  • process comprising from 0.0 : 1.0 to 0.84 : 1.0 mole ratio of dimethyl carbonate/ chlorobenzene.
  • the preparation of compound of formula (III) is carried out at a temperature of from 10°C to 70 °C.
  • the preparation of compound of formula (IV) is carried out at a temperature of from 0°C to 80°C. In a further embodiment the preparation of compound of formula (I) is carried out at a temperature of from 0°C to 80°C.
  • the desired product, a compound of Formula V can be isolated by methods known to those skilled in the art, including crystallization, extraction and distillation.
  • the present invention concerns the preparation of indoxacarb of formula V using methyl chloroformyl[4-(trifluoromethoxy)phenyl]carbamate of formula I prepared by the telescopic process comprising: a) preparation of compound of formula (II) by reaction of compound of formula (III) with phosgene in the presence of dimethylcarbonate and hydrocarbon organic solvent b) preparation of compound of formula (IV) by reaction of compound of formula (II) with methanol and distillation out of dimethylcarbonate c) reaction of compound of formula (IV) with phosgene in the presence or phosgene derivative of phase transfer catalyst, alkaline base and hydrocarbon organic solvent as described in previous embodiments.
  • the desired product, a compound of Formula I can be isolated by methods known to those skilled in the art, including crystallization, extraction and distillation.
  • the experimental set-up involved two syringe pumps followed by a micromixer, which was then connected to a coiled PFA tube (0.8 mm i.d., 3.65 mL volume). The residence time was varied by changing the flow rates. The samples were collected in acidic solution to quench the reaction at the outlet of the reaction tube. The product was subjected to analysis after further dilution.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP22751859.4A 2021-07-13 2022-07-11 Method of preparing of arthropodicidal oxadiazine intermediate Pending EP4370501A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202163221016P 2021-07-13 2021-07-13
PCT/IL2022/050743 WO2023286053A1 (en) 2021-07-13 2022-07-11 Method of preparing of arthropodicidal oxadiazine intermediate

Publications (1)

Publication Number Publication Date
EP4370501A1 true EP4370501A1 (en) 2024-05-22

Family

ID=82846551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22751859.4A Pending EP4370501A1 (en) 2021-07-13 2022-07-11 Method of preparing of arthropodicidal oxadiazine intermediate

Country Status (5)

Country Link
US (1) US20240327363A1 (zh)
EP (1) EP4370501A1 (zh)
CN (1) CN117940402A (zh)
IL (1) IL309820A (zh)
WO (1) WO2023286053A1 (zh)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5462938A (en) 1990-12-21 1995-10-31 Annus; Gary D. Arthropodicidal oxadiazinyl, thiadiazinyl and triazinyl carboxanilides
WO1993019045A1 (en) 1992-03-26 1993-09-30 E.I. Du Pont De Nemours And Company Arthropodicidal amides
CN1142922C (zh) 1994-04-20 2004-03-24 纳幕尔杜邦公司 用于制备噁二嗪的中间体及其制法
CN112479934A (zh) * 2020-12-09 2021-03-12 安徽广信农化股份有限公司 一种氨基氯甲酸甲酯的合成方法

Also Published As

Publication number Publication date
US20240327363A1 (en) 2024-10-03
WO2023286053A1 (en) 2023-01-19
IL309820A (en) 2024-02-01
CN117940402A (zh) 2024-04-26

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